Question

do the following sums
if x -5= √3 , find x³+ √3x².
if y-3=- √2 , find y² - 7y+7.​

Answer 1

Answer:

$given \: x = 5 + \sqrt{3}$

${x}^{2} = 34 + 10 \sqrt{3}$

$now \: {x}^{3} + \sqrt{3} {x}^{2} = {x}^{2} (x + \sqrt{3} )$

$(34 + 10 \sqrt{3} )(5 + \sqrt{3} + \sqrt{3}) = (34 + 10 \sqrt{3} )(5 + 2 \sqrt{3} ) = 170 + 50 \sqrt{3} + 68 \sqrt{3} + 60 = 230 + 118 \sqrt{3} \: \: ans$

Answer 2

Step-by-step explanation:

do the following sums

if x -5= √3 , find x³+ √3x².

if y-3=- √2 , find y² - 7y+7.